UNSPSC 41115310: Optical calibration sets

UNSPSC 41115310 Optical calibration sets (Commodity) covers EPA Protocol calibration and audit gases supplied in cylinders to state and local agencies for environmental monitoring and emissions compliance. State and local governments buy these gases primarily to support Continuous Emissions Monitoring Systems (CEMS) and other air-quality regulatory functions. The gas mixtures are prepared using EPA G1 methods, traceable to NIST Standard Reference Materials, and supplied in 144-cubic-foot cylinders with Certificates of Accuracy. Issuing bodies include county public works departments and special-purpose districts managing utility and environmental infrastructure; the recent activity shows county-level procurement offices executing multi-year usage agreements with fixed pricing, delivery guarantees, and cooperative extensions to subordinate public entities.

The Orange County, California Public Works Department issued an IFB (solicitation 0803068001RE) in September 2026 for EPA Protocol calibration and audit gases, due August 10, 2026, supporting the County's cogeneration CEMS facility in Santa Ana and subject to South Coast Air Quality Management District emissions requirements. The contract structure is a five-year usage agreement with firm fixed pricing, 24-hour delivery commitments, a 5% local small business and disabled veteran enterprise preference (capped at $100,000), and a cooperative purchasing extension allowing other municipalities, public utilities, educational institutions, and nonprofit or governmental organizations to piggyback on the awarded contract with a 2% administrative rebate. Performance and Labor and Material Payment Bonds are required, and bidders must hold valid UEI and D-U-N-S numbers, California Secretary of State registration, and comply with SAM.gov exclusion verification. A second opportunity (Sourcewell RFP #061626, posted May 2026, due June 16, 2026) tagged under Law Enforcement Equipment shows no direct relevance to optical calibration sets and appears to be a category misclassification. Recent activity in this code remains limited; the Orange County solicitation represents the primary substantive opportunity visible under the commodity code at this time.